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Unfortunately, no further details are provided with the video which just shows the wheels moving. No dyno figures yet but this is a complicated process and there is a reason nobody has brought a positive displacement M3 kit to market. It's very, very hard to do.

Pricing is expected to be in the $12,990 area with a release this Fall.

The main thing to take away is it's still coming and according Harrop relatively soon. BimmerBoost wishes them well and wants to make it clear when this comes to market it will be an achievement worthy of great respect. Good luck to all involved.

why not turbo ? 11.5 to 1 is high just needs to be tuned right and not going for any huge power but a low comp build motor would be a beast. with 3 different types of boost soon to be had for the s65 people can pick what works best for them.

Originally Posted by G0TB00ST?

Same here! I bet this setup pulls hard down low. I don't see this being a very good turbo platform though...

why not turbo ? 11.5 to 1 is high just needs to be tuned right and not going for any huge power but a low comp build motor would be a beast. with 3 different types of boost soon to be had for the s65 people can pick what works best for them.

Don't get me wrong I would love I see this happen, but I feel like there's a reason no other tuner has even givin it the time of day really. I see possibly reliability issues, running problems and turbo placement seems suspect from what I've seen.

why not turbo ? 11.5 to 1 is high just needs to be tuned right and not going for any huge power but a low comp build motor would be a beast. with 3 different types of boost soon to be had for the s65 people can pick what works best for them.

The motor in itself isn't the problem, it's the material (Alusil) is known to have block flex problems, there's probably a ton of space issues (custom exhaust manifolds to mount the turbos pre-X pipe) and cost:

Supercharger:

1 Supercharger

1 Bracket & Belts

1 Manifold

1 FMIC or Heat-Exchanger (and plumbing)

BOV/Recirc Valves

Tuning -- Much easier to adapt an SC to a non-FI car than a turbo

Turbocharger:

2 Turbos

2 Custom Manifolds

1 FMIC

2 BOVs

2 Wastegates

1 Electronic Boost Controller

1 Manifold

Injectors / Possible Fueling Upgrade

All Necessary Vacuum Lines to Run WGs & BOVs

All Necessary Lines/Tapping to Run Turbos (Oil/Oil & Water Cooling)

Tuning in Conjuction with Electronic Boost Controller

IF it's done right, the S65 would be really cool turbo'd. But we already know it's gonna cost more than any of the supercharger options, it won't really shine unless it's on a built motor & even though the Rotrex offers a lot of low-end TQ, the Harrop is going to going to fill that void for people who want insta-Tire Roasting-boost with a TS blower

I know what the blocks are made of I've specialized in BMWs for 10 years and yes when you get to a power level sleeving the block needs to happen. Im not saying its a better kit or better way of boosting a s65 or cost affective. i love seeing new things for this motor the Harrop kit looks clean and should be a beast and this TT kit will be cool but it will take a ton of money, time and talent to make a retail-able kit but there will always be someone wanting big power or "look I have twin turbos " I just want to hear a TT s65

Originally Posted by benzy89

The motor in itself isn't the problem, it's the material (Alusil) is known to have block flex problems, there's probably a ton of space issues (custom exhaust manifolds to mount the turbos pre-X pipe) and cost:

Supercharger:

1 Supercharger

1 Bracket & Belts

1 Manifold

1 FMIC or Heat-Exchanger (and plumbing)

BOV/Recirc Valves

Tuning -- Much easier to adapt an SC to a non-FI car than a turbo

Turbocharger:

2 Turbos

2 Custom Manifolds

1 FMIC

2 BOVs

2 Wastegates

1 Electronic Boost Controller

1 Manifold

Injectors / Possible Fueling Upgrade

All Necessary Vacuum Lines to Run WGs & BOVs

All Necessary Lines/Tapping to Run Turbos (Oil/Oil & Water Cooling)

Tuning in Conjuction with Electronic Boost Controller

IF it's done right, the S65 would be really cool turbo'd. But we already know it's gonna cost more than any of the supercharger options, it won't really shine unless it's on a built motor & even though the Rotrex offers a lot of low-end TQ, the Harrop is going to going to fill that void for people who want insta-Tire Roasting-boost with a TS blower

why not turbo ? 11.5 to 1 is high just needs to be tuned right and not going for any huge power but a low comp build motor would be a beast. with 3 different types of boost soon to be had for the s65 people can pick what works best for them.

IF it's done right, the S65 would be really cool turbo'd. But we already know it's gonna cost more than any of the supercharger options, it won't really shine unless it's on a built motor & even though the Rotrex offers a lot of low-end TQ, the Harrop is going to going to fill that void for people who want insta-Tire Roasting-boost with a TS blower

You're spending over $15k either way (tax, install, etc.) so who really cares about a few grand here or there?